Here is the full list of all 22 BLACK BIRD achievements.
Get 35 million score points in any mode.
Get 20 million score points in True Mode and watch this Bad Ending.
Get 7.5 million score points by using 1 bomb.
Get 25 million score points and watch the true ending.
Get 11 million score points in True Mode and watch this Bad Ending.
Get 23 million score points in any mode.
Get 17 million score points in True Mode and watch this Bad Ending.
Get 14 million score points in True Mode and watch this Bad Ending.
Break all 20 pots by 1 play in True Mode.
Find a big flying fish and destroy it.
Get 5 million score points in stage 1.
Destroy all 15 Bone Fish by 1 play in True Mode.
Finish True Mode and watch this Bad Ending.
Harvest all 16 Asparas by 1 play in True Mode.
Become the final form by gathering green soul gems.
Witness the last boss in True Mode.
Break an electric bulb of Paladon with a back shot.
Get 1 million score points by using 1 bomb.
Witness her when staying 4 minutes in a stage.
Finish Normal Mode.
Get 10 million score points.
Use a bomb when combo count is 30(MAX COMBO).